me wit these 3 questions plz.a cone has a base radius of 7 centimeters and a height of 21 centimeters.what is the volume of the cone? a.28π cm3 b.49π cm3 c.147π cm3 d.343π cm3

1. preform the indicated operation. then estimate to see whether the proposed result is reasonable. 811.1 - 8.039 803.071 803.061 803.161 831.061 2. the ordered pair (1, 2) lies in which quadrant? quadrant ii quadrant iv quadrant iii quadrant i 3. sean tries to drink 3 liters of water every day how my millimeters of water does he drink in a day? 0.3 ml 0.003 ml 3,000 ml 30 ml 4. find the least common multiple. (lcm). 10, 36 5 180 20 360

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

Which represents the solution set of the inequality 5x-9 < 21? a. x < 12/5 b. x > 12/5 c. x > 6 d. x < 6